I found this information via Catholic Bandita.
Things are heating up in Michigan. Democrats threatened violence in response to Right-to-Work legislation, viaHotAir, and violence is indeed what we’re seeing. Watch as conservative activist Steven Crowder asks union thugs not to tear down the Americans for Prosperity Tent. The response to Crowder is violent, including a brutal sucker punch as he enters the AFP tent, near the end of the video.
H/T Catholic Bandita